California Agriculture, September 1947
Volume 1, Number 10
Stone fruits on peach root resist bacterial canker
by Leonard H. Day
Not available – first paragraph follows: Stone fruit growers should consider the use of peach roots in areas where bacterial canker—commonly known to growers as Sour Sap and bacterial gummosis—is a major problem.
Yield and quality of raisins improved by harvesting when grapes are at full ripeness
by H. E. Jacob
Not available – first paragraph follows: The most advantageous time to pick raisin grapes for sun drying represents a compromise between two considerations: (1) The larger yields and better quality obtained from well-ripened fruit, and (2) The more favorable drying conditions early in the season.
Suggestions for grazing lambs on irrigated pasture
by Robert F. Miller
Not available – first paragraph follows: The fattening of lambs on irrigated pastures is not without its problems.
Leased farm lands in California now less than in 1940
by Arthur Shultis
Extract of talk given before the California Chapter, National Institute of Farm Brokers, Davis, June, 1947.
Present and future research in dairy industry problems
by E. L. Jack
The following abstract is from an address given before the Quarterly Meeting of the Dairy Institute of California at Eureka, August 21, 1947, By E. L. Jack, Chairman of the Division of Dairy Industry, College of Agriculture.
Oil fractions and their toxic effect on plants when used as weed killing sprays explained
by A. S. Crafts
A description of oil fractions and their toxic effects on weeds, extracted from the Agricultural Extension Service Circular No. 137, General Contact Weed Killers, issued by the University of California College of Agriculture. The complete circular may be obtained without charge by addressing a request to the College of Agriculture, Berkeley 4, California.
Newly developed insecticides for pest control
by Robert L. Metcalf
Not available – first paragraph follows: Scientific research by commercial and governmental interests has resulted in an unprecedented development of new materials showing great promise as insecticides. Intelligent evaluation of their potentialities will offer big dividends in improving the efficiency of present day pest control practices.
Branch wilt of persian walnut trees resulting from the fungus which attacks the bruised bark
by E. E. Wilson
Not available – first paragraph follows: Probably it was present in the Sacramento Valley at the same time.
High temperatures reduce water take of dairy cattle
by W. M. Regan , S. W. Mead
Not available – first paragraph follows: The water consumption results reported below are the by-product of a large experiment designed to study the affect of changes in environmental temperature on high producing dairy cows.
Supplemental feed supplies leached nutrient values
by H. R. Guilbert
Not available – first paragraph follows: An inch, or even less, of rain on dried range feed can leach out the soluable sugars, 10% to 20% of the protein, and as much as 60% of the mineral.
New heat-expanded minerals of high water-holding capacity—good aids in plant propagation
by V. T. Stoutemyer
Not available – first paragraph follows: Recently two relatively inert mineral substances have been tested which appear to have numerous uses in plant growing, especially in operations connected with plant propagation. These are heat-expanded vermiculite and perlite.
Abstracts of new publications